Portable storage shelf



FIG. 1 is a perspective view of the fully extended portable storage shelf of the present invention;

FIG. 2 is a top elevational view of the partially retracted portable storage shelf of the present invention;

FIG. 3 is a bottom view of the partially retracted portable storage shelf of the present invention;

FIG. 4 is a right side view of the partially retracted portable storage shelf of the present invention;

FIG. 5 is a front view of the partially retracted portable storage shelf of the present invention;

FIG. 6 is a rear view of the partially retracted portable storage shelf of the present invention;

FIG. 7 is a top elevational view of the fully extended portable storage shelf of the present invention;

FIG. 8 is a bottom view of the fully extended portable storage shelf of the present invention;

FIG. 9 is a front view of the partially retracted portable storage shelf of the present invention; and,

FIG. 10 is a right side view of the partially retracted portable storage shelf of present invention.

The broken lines in FIGS. 1, 4, and 10 are for illustrative purposes only and form no part of the claimed design. 

CLAIM I claim the ornamental design for a portable storage shelf, substantially as shown and described. 